True North Cosplay
True North Cosplay is a Canadian online supplier of high quality EVA foam sheets and foam clay based out of Quebec. They are also one of the very few Canadian suppliers I've come across for Barge contact cement.
Visit their website: truenorthcosplay.com
Red Moon Cosplay Solutions
Located out of Edmonton, Alberta, Red Moon Cosplay Solutions offers a wide variety of cosplay supplies. EVA foam, Worbla, Acrylic, FlexiPaint, 3D Printing supplies, Tools, Books, Electronics and so much more.
Visit their website: redmooncosplaysolutions.com
CosplaySupplies.com offers shipping through their Toronto based warehouse. They are a great source for EVA Foam, Worbla, Finished Costumes. Makeup, Wigs, Props and more!
Visit their website: cosplaysupplies.com
Arda Wigs Canada
Everyone knows Arda Wigs for their incredibly high quality wigs, but recently they've started carrying much more. They are also one of the first suppliers in Canada for Foam Clay.
Visit their website: ardawigscanada.com